A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6145-00-480-4809
NSN 6240-00-910-3297
NSN 5930-01-541-4741
NSN 6620-01-562-8816
NSN 5975-01-623-9468
NSN 6135-01-142-6456
NSN 6320-00-857-4073
NSN 6620-00-323-0031
NSN 5999-01-224-7260
NSN 6145-01-311-2799
NSN 5975-01-033-0299
NSN 5999-00-159-7675